Apparatus for preserving and exhibiting photographic pictures



G. ROBINSON APPARATUS FOR PRESERVING AND EXHIBITING PHOTOGRAPHIG PIOTURES.

Patented Oct. 17, 1865.

. 7 VV V M 7722571 ease 1 It. I I

UNITED STATES PATENT OFFICE,

CHARLES ROBINSON, OF SPRINGFIELD, MASSACHUSETTS.

APPARATUSFOR'PRESERVING AND EXHlBlTING. PHOTOGRAPHIC PICTURES.

Specification forming part of Letters Patent No. 50,498, dated. October 17, 1865.

To all whom it may concern:

Beit known that I, CHARLES ROBINSON, of Springfield, in the county of Hampden and State of Massachusetts, have inventedan Improvement in Apparatus for Exhibiting and Preserving Photographic Pictures; and I do hereby declare that the following is a full and exact description thereof, reference being had to the accompanying drawing, making part of this specification, and representing a central longitudinal vertical section of the apparatus.

The present improvement is additional to the improved apparatus secured to me by Letters Patentbearingdate the 11th dayot' April, 1865. The principal parts,bein g the same as described in said Letters'Patent, need not be again described. Adefeetin the apparatus, as therein shown, arises from the fact that, as the mount! ing -band 0 becomes nearly all wound up on either of the cylinders B B the portion exhibited beneath the openings at a is not level, and consequently not parallel with the top of the case, so that the pictures do not show evenly nor satisfactorily; and it iszdesirabl'e in all cases to bring the pictures as closely up to thepglass as practicable, and uniformly at all times. Small friction-rollers over which to passthe band, 1 find, cannot be used, since abruptn'ess of the turn which the band has to make.

.My present improvement consists in the employment of two guide-plates, D D, located over the cylinders B B, substantially as shown in the drawing, at a sutficient distance therefrom to allow thecylindcrs to turn nnderthem with the whole band wound round them, and reaching up as closely to the glass as desired. The outer edges, f f, are curved downward somewhat, so that the band C will not rub against them and be injured thereby.

The plates may be secured at the inner edges by havin gflan res projecting at their ends slide into grooves (1 din the sides of the inclosing-bnx A. The plates may be made ofeommou tin-plate, orofan y other suitable material.

What I claim as my invention, and desire to secure by Letters Patent, is-- The guide-plates D D, .in combination with the mounting-band U and winding-cylinders B B, substantially as and for the purpose herein specified.

The above specification signedby me this 27th day of May, 1865.

CHARLES ROBINSON. 

